Re: [Visualpython-users] Uniform scaling with gdisplay

[Poul R. <Pou...@sk...>]

Even worse now:

Running the program below now results in the following error message:

Traceback (most recent call last):
  File "C:\pr\python\spiral.py", line 11
    spiralplot =
visualgraph.curve(color=visualgraph.crayola.magenta,display=spiralgraph)
  File "C:\Python32\lib\site-packages\vis\primitives.py", line 82, in
__init__
    if not _other: self.init_defaults(keywords)
  File "C:\Python32\lib\site-packages\vis\primitives.py", line 175, in
init_defaults
    self.material = self.display.material
AttributeError: 'gdisplay' object has no attribute 'material'





import visual.graph as visualgraph
from time import *
from math import *

spiralgraph=visualgraph.gdisplay(title='Spiral', ytitle='x', xtitle='y',
                                 x=0, y=0,
                                 width=800, height=800,
                                 foreground=visualgraph.color.black,
                                 background=visualgraph.color.white)
spiralplot =
visualgraph.curve(color=visualgraph.crayola.magenta,display=spiralgraph)
spiralplot.plot(pos=(-15,-15))
spiralplot.plot(pos=(15,-15))
spiralplot.plot(pos=(15,15))
spiralplot.plot(pos=(-15,15))
spiralplot.plot(pos=(-15,-15))
for i in range(0,3600):
    t=pi*i/360
    x=t*cos(t)
    y=t*sin(t)
    spiralplot.plot(pos=(x,y))
    sleep(0.001)




Poul Riis